PayPal shopping cart etc. once again

still having problems with transferring basket-details from multishop shopping cart to PayPal shopping cart.

After reviewing the paypal.php file in multishop and comparing it with PayPal html integration code for shopping cart, I recognized, that multishop uses the _xclick integration. Means only shop name, order number and total amount are transferred.(shop name is not necessary because it´s with big bold letters on top of the Paypal shopping cart)

Have tried to change it to PayPals _cart integration.to transfer more detailed basket data. For that reason I have tried to put in some additional code like the following on multishops paypal.php file:

Guess it´s because of my poor php knowledge or may be I have inserted the wrongvalues. But what are the right values to put in. (I took the values from review.php)

Can anybody help me please? I need a more detailed shopping cart on Paypal.

Next point:

In multishops paypal.php _xclick integration, some personal customer data are listed for input / transfer into PayPal´s guest form, like first name, name, address, zip, city and so on. But these data are not tranferred from multishop to PayPal. Or for what reason else, these data are listed in paypal.php? Because if some body already has an account on paypal, these data don´t need to be transferred.

I think these issues are very importand, because every little thing what's irretatingpossible customers of a webshop, prevents them from buying. In this case, especially, when they are used to other, more detailed paypal shopping cart integrations like xt-commerce ect.